Sun Cluster 3.1 Concepts Guide

Cluster Interconnect

The cluster interconnect is the physical configuration of devices used to transfer cluster-private communications and data service communications between cluster nodes. Because the interconnect is used extensively for cluster-private communications, it can limit performance.

Only cluster nodes can be connected to the cluster interconnect. The Sun Cluster security model assumes that only cluster nodes have physical access to the cluster interconnect.

All nodes must be connected by the cluster interconnect through at least two redundant physically independent networks, or paths, to avoid a single point of failure. You can have several physically independent networks (two to six) between any two nodes. The cluster interconnect consists of three hardware components: adapters, junctions, and cables.

The following list describes each of these hardware components.

See Chapter 4, Frequently Asked Questions for questions and answers about the cluster interconnect.